Perencanaan Reklamasi dan Shore protection Pulau G Teluk Jakarta

Pribadio, Nabila Cahayuni (2024) Perencanaan Reklamasi dan Shore protection Pulau G Teluk Jakarta. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Reklamasi merupakan usaha untuk menambah lahan berdasarkan peningkatan kebutuhan lahan untuk kedepannya. Salah satu kegiatan reklamasi yang akan dilakukan adalah reklamasi Pulau G di Provinsi DKI Jakarta. Dengan meningkatnya kebutuhan hunian masyarakat di lokasi DKI Jakarta, perluasan Pulau G merupakan salah satu usaha untuk memenuhi kebutuhan tersebut.
Berdasarkan data tanah, kondisi tanah dasar pada area reklamasi kurang menguntungkan untuk dilakukannya reklamasi. Kondisi tanah dasar pada perairan pantai dominan berjenis lempung dan sedikit tanah lanau dengan NSPT nol hingga kedalaman 10 meter. Karena hal tersebut, tanah dasar memiliki stabilitas yang rendah. Selain itu, tanah dasar yang dominan lempung juga mengakibatkan pemampatan yang besar jika diberi timbunan dengan volume yang besar. Timbunan reklamasi terletak pada perairan laut yang mengakibatkan pastinya ada gangguan oleh gelombang air laut. Maka dari itu selain perkuatan, dibutuhkan percepatan pemampatan tanah dasar dan bangunan pengaman pantai untuk mengatasi masalah tersebut.
Dari hasil perencanaan, diperoleh perencanaan percepatan konsolidasi dengan menggunakan Prefabrifated Vertical Drain dengan spesifikasi CT-D812 panjang pemasangan 8 m jarak 1,5 pola persegi. Untuk memperkuat stabilitas tanah dasar akibat timbunan awal, direncanakan sandkey dengan ketebalan pada Zona 1, Zona 2, dan Zona 3 secara berturut-turut yaitu 7 m, 7 m, dan 4 m sehingga diperoleh rata-rata safety factor pada kondisi statis sebesar 1,58; 2,09; dan 3,56. Sedangkan safety factor pada kondisi seismik sebesar 1,30; 1,22; dan 1,84. Shore protection dipasang menggunakan material batu pecah sepanjang lereng tinggi timbunan Lebar puncak shore protection pada Zona 1, Zona 2, dan Zona 3 berturut-turut yaitu 1,5 m; 2,0 m; dan 4,0 m.
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Reclamation is an effort to expand land based on the increasing need for land in the future. One of the reclamation activities to be undertaken is the reclamation of Island G in the DKI Jakarta Province. With the growing housing needs of the population in the DKI Jakarta area, the expansion of Island G is one of the efforts to meet those needs.
Based on soil data, the subsoil conditions in the reclamation area are not favourable. The subsoil conditions in the coastal waters are predominantly clay and a small amount of silty clay with N-SPT (Standard Penetration Test) of zero up to a depth of 10 meters. Due to this, the subsoil has bearing capacity and stability issues. Moreover, the dominant clay subsoil also results in significant compression when subjected to large volumes of fill. The reclamation fill is located in the sea, which inevitably leads to disturbances caused by sea waves. Therefore, in addition to reinforcement, there is a need for accelerated consolidation of the subsoil and coastal protection structures to address these issues.
From the planning results, an accelerated consolidation plan using Prefabricated Vertical Drains (PVD) with the specification CT-D812, an installation length of 8 meters, and a spacing of 1.5 meters in a square pattern. To enhance the stability of the subgrade due to the initial embankment, sand keys are planned with thicknesses in Zone 1, Zone 2, and Zone 3 being 7 meters, 7 meters, and 4 meters, respectively. This results in an average safety factor under static conditions of 1.58, 2.09, and 3.56. Meanwhile, the safety factors under seismic conditions are 1.30, 1.22, and 1.84. The shore protection is installed using crushed stone material along the slope of the embankment. The crest widths of the shore protection in Zone 1, Zone 2, and Zone 3 are 1.0 meter, 1.5 meters, and 4.0 meters, respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Armour layer, Prefabricated Vertical Drain (PVD), Preloading, Pulau G, Reklamasi, Sand key.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	NABILA CAHAYUNI PRIBADIO
Date Deposited:	05 Aug 2024 04:03
Last Modified:	05 Aug 2024 04:03
URI:	http://repository.its.ac.id/id/eprint/110974

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